Bathroom Remodeling in Houston, TX

A bathroom is the smallest room in the house and the most expensive per square foot to renovate. Almost everything in it is plumbed, wired, waterproofed, tiled, or all four at once. H&H Construction LLC remodels bathrooms across Houston, from a guest bath that needs new fixtures and tile to a full gut where the shower moves to the opposite wall and the slab has to be opened to get there.

This page covers what the work actually costs in Houston, the one decision that moves your budget more than any material choice, and the two local realities that separate a bathroom that lasts twenty years from one that grows a cracked grout line in year three.

What a bathroom remodel costs in Houston

Most homeowners searching for the average cost of a bathroom remodel in Houston get a single number, which is useless, because the three common scopes barely overlap. Here is how we group them. These bands track published Houston pricing guides and match what we see bidding work here.

Inside any band, the variables that actually move the number are tile format and pattern (large-format and herringbone cost more to set than a running bond 12×24), how much glass you want, whether the vanity is stock, semi-custom, or built on site, and whether the plumbing moves. We break the line items down further on our Houston bathroom remodel cost page.

The biggest cost driver is whether the plumbing moves

Ask any honest bathroom remodel contractor in Houston what separates a $22,000 project from a $55,000 one and the answer is almost never the tile. It is the drain.

Supply lines are easy. They are small, flexible, and usually run overhead or through walls. Drains are the problem, because drain lines need continuous fall to work, so they have to be run in the floor structure. Most Houston homes built after the 1950s sit on a post-tensioned or conventionally reinforced slab-on-grade, and the toilet and shower drains are cast into that slab. Moving a toilet three feet means saw-cutting the concrete, breaking it out, trenching the soil beneath, cutting and re-tying the new drain and vent, backfilling and compacting, then pouring the patch back. On a post-tensioned slab there is the added step of locating the tendons so the saw does not hit one, which is not optional and is not free.

On pier and beam, the same change is cheaper but not free. Someone works on their back in the crawlspace, cutting into the existing cast iron or ABS, and you may be adding blocking or sistering a joist that has to be notched.

The practical takeaway: if the budget is tight, keep the toilet, the shower drain, and the vanity drain where they are. You can change literally everything else you see, including replacing a tub with a shower in the same footprint, without opening the floor. When we walk your bathroom we tell you plainly which changes are free and which ones start the slab conversation, so you get to decide.

Tub-to-shower conversion in Houston

This is the single change we get asked about most: a builder-grade 60-inch alcove tub nobody has used in a decade, replaced by a real shower. In the same 60-inch footprint the existing drain is usually close enough to reuse, which is why this is one of the highest-value changes per dollar in the house.

Curbless or zero-threshold

A curbless shower needs the drain low enough that the pan can hold its slope and still finish flush with the bathroom floor. On slab that generally means recessing the drain area and using a linear drain set along the back wall or the entry, so the whole pan pitches one direction instead of four. On pier and beam we can often drop the pan between joists. If you want it to work for a wheelchair later, the accessible standard for a roll-in compartment is 30 by 60 inches minimum with a threshold no taller than half an inch, beveled if it exceeds a quarter inch. We look at the existing drain before we promise curbless, not after.

Waterproofing: pan slope and membrane

This is where cheap shower work fails, and it is worth being specific. The plumbing code requires the shower floor to pitch a minimum of one-quarter inch per foot, a two percent slope, uniformly toward the drain, and the waterproof liner to turn up at least two inches above the finished threshold on all sides. Those are minimums, not targets.

How we get there matters. A traditional mud bed built on a sloped pre-slope with a PVC or CPE liner and a clamping drain works when it is built correctly. We more often build with a bonded sheet or liquid-applied membrane over a sloped mortar bed or a foam tray, tied to a bonding-flange drain, with every corner and pipe penetration treated with the manufacturer’s preformed corners and banding rather than a smear of extra liquid. Then we flood test: plug the drain, fill the pan, and let it sit 24 hours before a single tile goes on. If the pan does not hold water, we would rather find out on a Tuesday than after you have paid for tile.

Glass versus tile to the ceiling

Two different decisions, often conflated. Tile height is about water and proportion: running tile to the ceiling costs more in material and labor but removes the painted band above the surround that eventually gets steam damage, and it makes a small bath read taller. Glass is about enclosure. Frameless heavy glass looks best and costs the most; semi-frameless with a header is a real middle option; a single fixed panel with no door works only if the shower is deep enough that spray never reaches the opening. One scheduling note either way: glass is templated after tile is set and grouted, then fabricated, which typically adds one to two weeks at the end of the job.

Accessible and aging-in-place bathroom remodeling

Houston has genuine specialists in this work, and if your needs are complex you should talk to more than one contractor. What we can tell you is where accessible bathrooms usually go wrong, which is timing. Almost every accessibility feature is cheap while the walls are open and expensive after they close.

• Blocking for grab bars goes in during framing. We install flat 2×8 or 2×10 blocking between studs behind the shower wall, the toilet wall, and the entry side, screwed to the studs, spanning roughly 30 to 40 inches above the floor. That gives you solid wood to hit anywhere along those walls, later, without knowing today exactly where a bar will go. Grab bars and shower seats have to resist 250 pounds of force at any point on the bar, the fastener, and the supporting structure, and drywall anchors do not do that. Blocking now costs a few hundred dollars in lumber and labor; adding it in five years means cutting out finished tile.
• Wider door opening. The accessible minimum is 32 inches of clear width, which is what a 36-inch door leaf actually delivers once you subtract the hinge side and the stop. If the wall cannot give up the framing, a pocket door or an out-swinging door recovers floor area inside the room and lets someone reach a person who has fallen against the door.
• Comfort-height fixtures. An accessible water closet seat sits 17 to 19 inches above the floor, which is what manufacturers market as comfort height. It costs the same as a standard toilet. Choose it now.
• Curbless entry with a linear drain, handheld shower on a slide bar, lever handles, and a shower valve you can reach from outside the spray, so the water is running warm before anyone steps in.

None of this has to look clinical. Blocking is invisible. A curbless shower with a linear drain and large-format tile reads as a design choice, not a medical one. See finished work in our project gallery.

Permits: three different sets of rules in greater Houston

Whether you need a permit depends on scope, and where you file depends on which of three jurisdictions your house sits in. This trips up homeowners constantly.

Scope. Cosmetic swaps generally do not require a building permit. The City of Houston’s amendments to the 2021 International Residential Code list painting, wallpapering, tiling, carpeting, cabinets, and countertop repair and replacement as work exempt from permit. You cross the line the moment the job includes addition to, alteration of, replacement of, or relocation of water supply, sewer, drainage, or waste piping, adds electrical circuits, or moves a wall. Practically: retile the existing shower, no permit. Move the toilet, add a circuit for a heated floor, or take out a wall, permit.

Jurisdiction. Texas has no statewide building code, so three regimes run side by side here:

• City of Houston. Adopted the 2021 International Codes, including the IRC, IBC, IECC, and Existing Building Code, effective January 2, 2024. Plumbing permits are pulled by a Texas Master Plumber who has separately registered that state license with the city.
• Independent municipalities inside and around Houston such as Bellaire, West University Place, Jersey Village, Katy, Pearland, and Sugar Land. Each adopts its own code edition on its own schedule, with its own amendments and its own fee schedule. Two houses five minutes apart can be on different code cycles.
• Unincorporated Harris County. The county has far less code authority than a city. Under state law the county’s residential construction standards cannot require county approval before construction begins, the county cannot charge a fee to enforce them, and inspections are performed by a third-party inspector the builder hires rather than by a county building inspector. There is no county building-inspection department behind your remodel. That is exactly why you should not treat “no permit needed” as a reason to skip the flood test or the licensed plumber. Out there, the only thing enforcing the code is your contractor.

We identify the jurisdiction during the estimate and tell you what will be pulled, by whom, and what it costs.

Houston clay soil, foundation movement, and cracked tile

Here is the local durability problem nobody mentions until it happens. Houston sits on expansive clay. The City of Houston’s own emergency management office describes it plainly: clay minerals like smectite swell when they absorb water and shrink when they dry, the volume change damages structures by exerting pressure or removing support, and soil expansion of ten percent or more is typical in this region across our drought-and-downpour cycle.

Your slab moves. Tile does not. Bond a rigid tile floor directly to a slab with thinset and the slab’s next seasonal crack telegraphs straight through the tile and the grout.

Two things follow. First, address foundation movement before you tile, not after. If the bathroom floor is out of level, doors are sticking, or there is a live crack in the slab, that gets evaluated and dealt with first. Tile is the last thing you want to be the diagnostic tool. We do structural improvement work and will tell you if we think the slab needs attention before finishes go down.

Second, we set floor tile over a crack isolation or uncoupling membrane rather than thinset direct to concrete. That membrane lets the slab shear slightly beneath the tile instead of dragging it along. It is not magic. Membranes handle in-plane movement and shrinkage cracking; they do not fix vertical displacement, and they do not eliminate the need for soft movement joints at the perimeter and in the field. Anyone telling you a membrane cancels out a foundation problem is selling you something.

Realistic timeline

For a primary bathroom taken to studs on its existing layout, inside Houston city limits:

Realistic totals: four to six weeks on site for a same-layout primary bath, six to ten weeks for a full gut with a layout change and slab work. A guest bath refresh with no permit is usually one to two weeks.

Working with H&H Construction

We are a Houston general contractor doing custom homes, additions, structural work, and residential and commercial remodeling, which means a bathroom does not get handed to a crew that only does bathrooms. If your remodel turns out to need a beam, a slab repair, or a wall moved, that is in-house work rather than a change order to a subcontractor you have never met. We also work with investors on flip timelines, where the schedule matters as much as the finish.

On verification, we will be straight with you: there is no Texas general contractor license to show you. Read why. What you can and should verify is the licensed trades on your job. Plumbers are licensed by the Texas State Board of Plumbing Examiners under Chapter 1301 of the Texas Occupations Code, and their licenses are searchable by the public. Electricians and HVAC contractors are licensed by TDLR under Chapters 1305 and 1302. Ask us for the numbers and check them yourself.

More about us on our about page, and if the bathroom is part of something larger, see kitchen remodeling and whole home remodeling.

Tell us the room, the fixtures you want to keep, and the number you have in mind, and we will tell you honestly what fits and what does not, including whether your plan crosses into slab work.